Next 3 days weather summary:Moderate rain (total 11.0mm), heaviest on Fri afternoon. Warm (max 27°C on Thu afternoon, min 21°C on Thu night). Wind will be generally light. | Days 4-6 weather summary:Moderate rain (total 14.0mm), heaviest on Sun afternoon. Warm (max 28°C on Tue morning, min 21°C on Mon night). Wind will be generally light. | |||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  | | | | | |  | | |  | | | | |
clear | clear | some clouds | some clouds | t-storm risk | rain shwrs | t-storm risk | t-storm risk | some clouds | t-storm risk | t-storm risk | t-storm risk | t-storm risk | t-storm risk | clear | clear | clear | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | 6 | 1 | 2 | 2 | — | 1 | 6 | 4 | 2 | 1 | — | — | — | — |
max °C | 26 | 27 | 22 | 27 | 26 | 22 | 26 | 27 | 22 | 26 | 25 | 22 | 27 | 26 | 22 | 28 | 27 | 22 |
min °C | 24 | 25 | 21 | 23 | 24 | 22 | 25 | 25 | 21 | 25 | 25 | 22 | 25 | 25 | 21 | 25 | 25 | 21 |
chill °C | 24 | 25 | 21 | 23 | 24 | 22 | 25 | 25 | 21 | 25 | 25 | 22 | 25 | 25 | 21 | 25 | 25 | 21 |
Humid % | 69 | 61 | 43 | 64 | 78 | 85 | 85 | 77 | 87 | 88 | 88 | 95 | 85 | 82 | 85 | 79 | 77 | 80 |
Freeze m | 5750 | 5600 | 5600 | 5350 | 5400 | 5550 | 5500 | 5500 | 5600 | 5500 | 5500 | 5400 | 5400 | 5450 | 5500 | 5400 | 5400 | 5350 |
 | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — |
 | — | 7:23 | — | — | 7:23 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — |
SnowProGo pro and carve into:
Avalanche information: Japan Avalanche Network
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Mar 2026 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 700 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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